* {
    margin: 0px;
    padding: 0px;
}

input {
    /* border: none; */
    outline: none;
}

body {
    background-color: #f1f1f1;
    height: 100%;
}

.big-box h1 {
    width: 200px;
    height: 50px;
    margin: 50px auto;
    text-align: center;
    background-color: #233645;
    color: #f1f1f1;
}

.big-box p {
    height: 30px;
    margin: 40px 0px 30px 620px;
    font-size: 18px;
    font-weight: 700;
}

.big-box input {
    width: 200px;
    height: 30px;
}

#nan {
    width: 25px;
    height: 25px;
}

#nv {
    width: 25px;
    height: 25px;
}

.big-box button {
    width: 200px;
    height: 50px;
    background-color: #233645;
    margin-left: 550px;
    color: #f1f1f1;
    font-size: 18px;
}

.big-box .btn2 {
    margin-left: 20px;
}